BMW G8X M3/M4 CS - Bundle Package

What is it

This all-in-one performance upgrade transforms your standard BMW G80 M3 or G82 M4 into a track-ready weapon. By flashing factory CS engine calibrations alongside aggressive CSL chassis tuning, this bundle delivers a complete CS-spec transformation without requiring an invasive aftermarket ECU bench-unlock

The Technical Stuff

The package combines two premium software upgrades:

• BMW G80/G82 M3/M4 CS - DME Software Upgrade:
  • Power Increase: Unlocks a jump to 550BHP (560PS) and 650Nm of torque using genuine OEM CS mapping.
  • Top Speed Expansion: Bumps your electronic top speed limiter up to 188 mph (302 KM/H).
  • Warranty Safe: Works seamlessly within the factory hardware safety parameters of your S58 engine.
    
    
• BMW CSL/CS - Software Upgrade:
  • ZF8 Gearbox Flash: Delivers the crisp gear shifts of the limited-run CSL, alongside aggressive exhaust overrun burbles.
  • CSL EDC Calibration: Adjusts your electronic dampers for faster rebound control, sharper cornering, and less body roll.
  • M-Differential & Traction Control: Re-calibrates the rear differential and MDM traction control to deploy the new 543bhp power limits.
  • Steering Weight: Firms up the electronic steering rack for a more weighted, connected front-end feel.

COMPATIBILITY - 2021+ G80 BMW M3
COMPATIBILITY - 2021+ G82 BMW M4
COMPATIBILITY - 2021+ G83 BMW M4
COMPATIBILITY - 2022+ G81 BMW M3

What’s Included

• BMW G80/G82 CS DME Tune: £380
• BMW CSL/CS Handling Package: £220
• Workshop Appointment: Professional, hands-on installation at the workshop in Horley, Surrey.
• Remote Coding: Flash from any driveway using a Windows laptop, stable Wi-Fi, and an ENET coding cable.